Invention Grant
- Patent Title: Planetary transmission
- Patent Title (中): 行星传动
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Application No.: US14347486Application Date: 2012-08-02
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Publication No.: US08998762B2Publication Date: 2015-04-07
- Inventor: Uwe Griesmeier , Stephan Scharr , Bernd Vahlensieck , Stefan Beck , Christian Sibla
- Applicant: Uwe Griesmeier , Stephan Scharr , Bernd Vahlensieck , Stefan Beck , Christian Sibla
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Brinks Gilson & Lione
- Priority: DE102011083507 20110927; DE102012212257 20120713
- International Application: PCT/EP2012/065150 WO 20120802
- International Announcement: WO2013/045143 WO 20130404
- Main IPC: F16H3/72
- IPC: F16H3/72 ; H02K7/116 ; B60K6/48 ; F16H3/66 ; F16H3/62

Abstract:
The invention relates to a planetary transmission for a hybrid drive of a motor vehicle, having three coupled planetary gear sets, having numerous shift elements, and having at least one electric machine, to which a shaft inside the transmission is allocated, wherein, with a first planetary gear set, the ring gear can be connected to a component permanently attached to the housing, and the planet carrier is connected in a driving manner to the ring gear of a second planetary gear set, wherein, with the second planetary gear set, the planet carrier is connected to the ring gear of a third planetary gear set, and the sun gear can be powered by a transmission input shaft, and wherein, with the third planetary gear set, the planet carrier is connected to a transmission output shaft. In order that the planetary transmission has a compact structure and is cost-effective in terms of its production, and is efficient in terms the operation thereof, it is provided that the sun gear of the first planetary gear set is connected to the component permanently attached to the housing, and that the sun gear of the third planetary gear set can be connected to the component permanently attached to the housing and to the ring gear of the first planetary gear set.
Public/Granted literature
- US20140248987A1 PLANETARY TRANSMISSION Public/Granted day:2014-09-04
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